Characterising fatigue delamination in composite materials following standardised testing protocols is often associated with high costs and significant time investment. Therefore, it can be helpful to have a testing strategy to reduce the testing time and easily assess the fatigue delamination of multiple materials and conditions. This work shows how to apply one of the new rapid testing techniques known as the on composite materials. The method has been developed to predict the fatigue delamination of composite materials by monitoring the fatigue damage through the compliance of the specimen. The obtained data in terms of displacement and force is used to obtain the fracture toughness, fatigue crack onset, fatigue crack threshold, and crack propagation parameters by using a reduced number of specimens and a few testing hours. The testing procedure has been developed on carbon fibre-reinforced polymer used in aerospace structures. The obtained results in a short time are promising, reporting a deviation below 10% compared to the values obtained in the standardised fatigue delamination tests.

中文翻译：

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评估碳纤维增强聚合物 I 型疲劳分层的快速测试方法


按照标准化测试协议表征复合材料的疲劳分层通常需要高成本和大量时间投入。因此，制定一种测试策略来减少测试时间并轻松评估多种材料和条件的疲劳分层可能会有所帮助。这项工作展示了如何应用一种称为复合材料的新型快速测试技术。该方法已开发出来，通过样本的柔度监测疲劳损伤来预测复合材料的疲劳分层。所获得的位移和力数据可通过减少样本数量和几个测试小时来获得断裂韧性、疲劳裂纹起始、疲劳裂纹阈值和裂纹扩展参数。该测试程序是针对航空航天结构中使用的碳纤维增强聚合物而开发的。短时间内获得的结果令人鼓舞，与标准化疲劳分层测试中获得的值相比，偏差低于 10%。